极薄煤层高效钻采关键技术

doi:10.16265/j.cnki.issn1003-3033.2023.07.0421

中国安全科学学报 ›› 2023, Vol. 33 ›› Issue (7): 98-104.doi: 10.16265/j.cnki.issn1003-3033.2023.07.0421

极薄煤层高效钻采关键技术

徐阿猛¹^,²(), 胡洋¹^,²^,^**(), 尹立³, 贾进章⁴, 杨涛¹^,²

¹ 华北科技学院安全工程学院,河北廊坊 065201
² 应急管理部工业安全事故分析与监测预警重点实验室,河北廊坊 065201
³ 辽宁工程技术大学矿业学院,辽宁阜新123000
⁴ 辽宁工程技术大学安全科学与工程学院,辽宁阜新123000

收稿日期:2023-02-17 修回日期:2023-05-10 出版日期:2023-07-28
通讯作者:
^** 胡洋(1979—),男,辽宁沈阳人,博士,副教授,从事应急管理、工业安全及瓦斯爆炸等方面的科研与教学工作。E-mail:28770007@qq.com。
作者简介:
徐阿猛 (1976—),男,陕西武功人,硕士,讲师,从事矿山安全、煤矿瓦斯防治及应急管理等方面的科研与教学工作。E-mail:xamling@163.com。
贾进章,教授
杨涛,教授
基金资助:
国家自然科学基金(51574124); 中央引导地方科技发展资金项目(226Z1708G); 中央高校基本科研业务基金(3142015031); 河北省矿井灾害防治重点实验室开放基金(KJZH2013K04)

Key technology of efficient drilling and mining in extremely thin coal seam

XU A'meng¹^,²(), HU Yang¹^,²^,^**(), YIN Li³, JIA Jinzhang⁴, YANG Tao¹^,²

¹ School of Safety Engineering, North China Institute of Science & Technology, Langfang Hebei 065201, China
² Key Lab for Prevention and Control of Mine Disaster of Hebei Province, Langfang Hebei 065201, China
³ School of Mining Engineering, Liaoning Technical University, Fuxin Liaoning 123000, China
⁴ School of Safety Science and Engineering, Liaoning Technical University, Fuxin Liaoning 123000, China

Received:2023-02-17 Revised:2023-05-10 Published:2023-07-28

摘要/Abstract

摘要：

为提高极薄煤层钻遇率和瓦斯抽采效率,通过数值计算及现场试验等方法改进钻孔施工装备,提出将随钻测量定向钻进系统和随钻方位伽马测井仪联用的钻采关键技术,并结合中高压液动冲击器,形成适用于极薄煤层的新工艺。结果表明:下无磁管长度缩短为2 m,可有效提高随钻测量系统的测量精度,满足极薄煤层探顶探底及探边的需求;钻孔施工的实际轨迹与设计轨迹耦合度较高,实际轨迹和穿矸轨迹均控制在靶区范围内,实现了钻孔轨迹的全程化监测及轨道控制,使极薄煤层钻遇率均值达到88%左右,提高近40%;结合中高压液动冲击器碎岩钻进施工方式,有效解决钻孔过程中出现的塌孔、卡钻等事故,提高了钻孔的成孔率,形成了适用于极薄煤层的装备体系,使钻进效率提高了3倍,瓦斯抽放纯量达到未改进工艺前的3.8倍以上。

关键词: 极薄煤层, 高效钻采, 关键技术, 钻遇率, 随钻测量, 随钻方位伽马, 瓦斯抽采

Abstract:

In order to improve the drilling ratio and gas extraction efficiency of extremely thin coal seam, the drilling construction equipment was improved through numerical calculation and field test. The key drilling and production technology was put forward by combining the directional drilling system with the azimuth gamma-ray logging instrument while drilling. Combining with the medium-high pressure hydraulic impactor, a new technology suitable for extremely thin coal seams was formed. The results show that the length of the lower non-magnetic tube is shortened to 2 m, which can effectively improve the measurement accuracy of drilling system and meet the exploration needs of the extremely thin coal seam. The coupling degree between the actual trajectory and the design trajectory of the drilling construction is high. The actual trajectory and the gangue trajectory are controlled within the target area, and the whole process monitoring and trajectory control of the drilling trajectory are realized. The average drilling ratio of the extremely thin coal seam is about 88%, which is increased by nearly 40%. Combined with the rock breaking drilling construction method of medium-high pressure hydraulic impactor, the accidents such as hole collapse and sticking in the drilling process are effectively solved, the hole forming rate of the borehole is improved, and the equipment system suitable for extremely thin coal seam is formed. The drilling efficiency is increased by 3 times, and the gas drainage purity has been increased by more than 3.8 times.

Key words: thin coal seam, efficient drilling, key technology, drilling ratio, measurement while drilling, azimuthal gamma while drilling, gas extraction

徐阿猛, 胡洋, 尹立, 贾进章, 杨涛. 极薄煤层高效钻采关键技术[J]. 中国安全科学学报, 2023, 33(7): 98-104.

XU A'meng, HU Yang, YIN Li, JIA Jinzhang, YANG Tao. Key technology of efficient drilling and mining in extremely thin coal seam[J]. China Safety Science Journal, 2023, 33(7): 98-104.

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组号	见煤起止井段/m	见煤起止段长/m	非煤层段长/m	钻遇率/%
1	96~495	399	48	88
2	135~447	312	33	89

极薄煤层高效钻采关键技术

Key technology of efficient drilling and mining in extremely thin coal seam

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